A kind of permeable foam concrete and preparation method thereof

A foam concrete and foam technology, applied in the field of permeable foam concrete and its preparation, can solve problems such as difficult to achieve sponge city, achieve good water permeability, good water permeability and use performance, and solve the effect of poor water permeability

CN107140902BActive Publication Date: 2019-06-14THE FIRST SINCERITY CONSTR TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2019-06-14

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Abstract

The invention discloses water-permeable foam concrete which is prepared from the following main raw materials: cement, super-fine sand, water, admixtures, foams, fibers, cellulose ether and a water reducer. According to the water-permeable foam concrete, the crude fibers with larger size are doped into a foam concrete matrix, so that foam pores of foam concrete form a communication channel taking the fibers as guide pipes firstly; meanwhile, the average pore size of the foam concrete is increased by decreasing the bubble density in a blending process of the foam concrete, so that the foam pores and the crude fibers form better adaptability; the foam concrete shows better water permeability performance and use performance, so that the problem that the water permeable rate of the conventional foam concrete is low is solved; in addition, involved raw materials are low in cost, and a preparation method is simple, therefore, the water-permeable foam concrete is suitable for popularization and application.
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Description

technical field

[0001] The invention belongs to the field of building materials, and in particular relates to a water-permeable foam concrete with a water-retaining function and a preparation method thereof. Background technique

[0002] In recent years, many cities have faced many rainwater problems such as frequent waterlogging, runoff pollution, massive loss of rainwater resources, and ecological environment damage. The impermeable pavement used in the city is one of the important causes of urban waterlogging. When heavy rain occurs, the rainwater cannot penetrate naturally, but quickly forms surface runoff and flows to the low-lying areas. Due to the limitation of the drainage capacity of underground drainage pipes, the low-lying areas of some large cities in my country have formed a strange circle of "every heavy rain will flood the areas". Traditional impermeable pavements have brought a series of problems to the city, which are mainly manifested in the following aspe...

Examples

Embodiment 1～5

[0027] A kind of water-permeable foam concrete, the ratio of each raw material is shown in Table 1 respectively, and its preparation method comprises the following steps: according to the ratio, take the required raw materials, dilute the foaming agent by 60 times, prepare the foaming liquid, and then inject Foaming machine; add cement, ultra-fine sand, admixture, fiber, water-absorbing resin, and cellulose ether into the mixer for dry mixing for 15 seconds, then add water and water reducing agent and stir for 15 seconds to obtain the mixture; immediately prepare the foam (the resulting foam The density is 40kg / m 3 ), add foam to the mixture according to the ratio described in Table 1, continue to stir for 90s, and mix evenly to obtain the permeable foam concrete.

[0028] Table 1 Proportioning (parts by weight) of each raw material in the permeable foam concrete described in Examples 1 to 5

[0029]